Ch. 28 Pregnancy and Human Development
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732
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Table of contents
- Ch. 1 The Human Body: An Orientation25
- Ch. 2 Chemistry Comes Alive24
- Ch. 3 Cells: The Living Units24
- Ch. 4 Tissue: The Living Fabric19
- Ch. 5 The Integumentary System12
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System25
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue23
- Ch. 12 The Central Nervous System25
- Ch. 13 The Peripheral Nervous System and Reflex Activity30
- Ch. 14 The Autonomic Nervous System16
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System26
- Ch. 17 Blood27
- Ch. 18 The Cardiovascular System: The Heart25
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues16
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook
Chapter 28, Problem 10
The initial stage of labor, during which the neck of the uterus is stretched, is the
(a) dilation stage
(b) expulsion stage
(c) placental stage
Verified step by step guidance1
Understand the stages of labor: Labor is typically divided into three main stages—dilation, expulsion, and placental stages.
The dilation stage is the first stage of labor, during which the cervix (neck of the uterus) gradually stretches and opens to allow the baby to pass through.
The expulsion stage is the second stage, where the baby moves through the birth canal and is delivered.
The placental stage is the third and final stage, involving the delivery of the placenta after the baby is born.
Since the problem asks for the stage during which the neck of the uterus is stretched, identify that this corresponds to the dilation stage.
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Stages of Labor
Labor is divided into three main stages: the dilation stage, the expulsion stage, and the placental stage. Each stage involves specific physiological changes and processes that prepare the body for childbirth.
Recommended video:
02:28
Stages of Aerobic Cellular Respiration
Dilation Stage
The dilation stage is the first phase of labor, characterized by the gradual opening and thinning of the cervix (neck of the uterus) to allow the baby to pass through the birth canal. This stage ends when the cervix is fully dilated to about 10 centimeters.
Recommended video:
02:28Stages of Aerobic Cellular Respiration
Expulsion and Placental Stages
The expulsion stage follows dilation and involves the delivery of the baby through the birth canal. The placental stage is the final phase, during which the placenta is expelled from the uterus after the baby is born.
Recommended video:
3:22Placentation – Weeks 2-3
Related Practice